export default function showtime () {
  let dom = document.getElementById('time')
  var today, hour, second, minute, year, month, date
  var strDate
  today = new Date()
  // console.log("today---", today);
  var n_day = today.getDay()
  switch (n_day) {
    case 0:
      {
        strDate = '星期日'
      }
      break
    case 1:
      {
        strDate = '星期一'
      }
      break
    case 2:
      {
        strDate = '星期二'
      }
      break
    case 3:
      {
        strDate = '星期三'
      }
      break
    case 4:
      {
        strDate = '星期四'
      }
      break
    case 5:
      {
        strDate = '星期五'
      }
      break
    case 6:
      {
        strDate = '星期六'
      }
      break
    case 7:
      {
        strDate = '星期日'
      }
      break
  }
  year = today.getFullYear()
  // console.log('year--', year)
  month = today.getMonth() + 1
  date = today.getDate()
  hour = today.getHours()
  minute = today.getMinutes()
  second = today.getSeconds()
  if (month < 10) month = '0' + month
  if (date < 10) date = '0' + date
  if (hour < 10) hour = '0' + hour
  if (minute < 10) minute = '0' + minute
  if (second < 10) second = '0' + second
  dom.innerHTML = year + '年' + month + '月' + date + '日 ' + strDate + ' ' + hour + ':' + minute + ':' + second // 显示时间
  return dom
  // return setInterval('showtime();', 1000) // 设定函数自动执行时间为 1000 ms(1 s)
}
